Venetian Great Galleass Melee

Preparing for the attack

I had to test this out after I saw that, unlike the Galleass, the Great Galleass does not have the "May Not Melee Attack" ability in the Civilopedia. I started a test game and DoWed Darius, as he had the first attack ship I could find.
Seen here, both the melee attack and ranged attack buttons are available.